WO2022016703A1 - 触控显示装置 - Google Patents

触控显示装置 Download PDF

Info

Publication number
WO2022016703A1
WO2022016703A1 PCT/CN2020/117677 CN2020117677W WO2022016703A1 WO 2022016703 A1 WO2022016703 A1 WO 2022016703A1 CN 2020117677 W CN2020117677 W CN 2020117677W WO 2022016703 A1 WO2022016703 A1 WO 2022016703A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrode
touch
equal
branch
display device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2020/117677
Other languages
English (en)
French (fr)
Inventor
叶剑
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Original Assignee
Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority to US17/265,132 priority Critical patent/US11460968B2/en
Publication of WO2022016703A1 publication Critical patent/WO2022016703A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0448—Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04112—Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display

Definitions

  • the present application relates to the field of touch technology, and in particular, to a touch display device.
  • Capacitive touch screens are widely used in various electronic interaction scene devices due to their high durability and long life, and support for multi-touch functions.
  • the purpose of the present application is to provide a touch display device with a high touch reporting rate.
  • the present application provides a touch display device comprising a touch layer, the touch layer comprising a plurality of touch units, each of the touch units comprising a first touch panel disposed along a first direction electrodes and a second electrode arranged along a second direction, the first electrode is electrically insulated from the second electrode, the first direction is different from the second direction, and each of the touch control units ,
  • the resistance of the first electrode is greater than 0 ohms and less than or equal to 50 ohms, and the parasitic capacitance of the first electrode is greater than 0 picofarads and less than or equal to 18 picofarads;
  • the resistance of the second electrode is greater than 0 ohms and less than or equal to 50 ohms, and the parasitic capacitance of the second electrode is greater than 0 picofarads and less than or equal to 18 picofarads.
  • the resistance of the first electrode is greater than or equal to 5 ohms and less than or equal to 35 ohms, and the parasitic capacitance of the first electrode is greater than or equal to 2 picoohms and less than or equal to 17 picofarads;
  • the resistance of the second electrode is greater than or equal to 5 ohms and less than or equal to 35 ohms, and the parasitic capacitance of the second electrode is greater than or equal to 2 picofarads and less than or equal to 17 picofarads.
  • the touch display device further includes a first lead, a second lead and a touch chip, and the first lead is electrically connected to the first electrode of each of the touch units , the second lead is electrically connected to the second electrode of each touch unit, the first lead and the second lead are electrically connected to the touch chip, each of the first lead and the resistance of each of the second leads is greater than 0 ohms and less than or equal to 2500 ohms.
  • the resistance of the first electrode is greater than or equal to 8 ohms and less than or equal to 30 ohms, and the parasitic capacitance of the first electrode is greater than or equal to 5 picofarads and less than or equal to 13 picofarads;
  • the resistance of the second electrode is greater than or equal to 8 ohms and less than or equal to 30 ohms, and the parasitic capacitance of the second electrode is greater than or equal to 5 picofarads and less than or equal to 13 picofarads;
  • each of the first lead and each of the second lead is greater than or equal to 100 ohms and less than or equal to 2000 ohms.
  • the resistance of each of the first leads and each of the second leads is greater than or equal to 200 ohms and less than or equal to 2200 ohms.
  • a node mutual capacitance is formed between the first electrode and the second electrode in each of the touch control units, and the time for the node mutual capacitance to be charged to a preset voltage is less than or equal to Threshold duration.
  • the touch display device further includes a touch chip, the percentage of the preset voltage to the input voltage is 90%-100%, and the threshold duration is less than or equal to 1.5 microseconds and greater than 0 microseconds, the input voltage is output from the touch control chip to the touch control unit.
  • the percentage ratio of the preset voltage to the input voltage is 95%, and the threshold duration is 1.35 microseconds.
  • the number of the touch units arranged in the same row along the first direction is greater than the number of the touch units arranged in the same row along the second direction, and the first electrodes
  • the parasitic capacitance is smaller than the parasitic capacitance of the second electrode.
  • the area of the first electrode is smaller than that of the second electrode.
  • the first electrode includes a first trunk electrode extending along the first direction and at least one first branch electrode extending from the first trunk electrode;
  • the second electrode includes a second trunk electrode extending along the second direction and at least one second branch electrode extending from the second trunk electrode.
  • a floating electrode is provided in the first trunk electrode, and/or a floating electrode is provided in at least one of the first branch electrodes, and/or the second trunk electrode A floating electrode is provided therein, and/or a floating electrode is provided in at least one of the second branch electrodes, and the floating electrode is electrically insulated from the first electrode and the second electrode.
  • the second electrode further includes a first connection branch electrode, one end of the first connection branch electrode is connected to the second trunk electrode, and the other end of the first connection branch electrode is connected to
  • a floating electrode is provided in the area enclosed by the first connection branch electrode, the second trunk electrode and the second branch electrode of each touch control unit, and the floating electrode The electrode is electrically insulated from the first electrode and the second electrode.
  • the second electrode further includes a second connection branch electrode, one end of the second connection branch electrode is connected to the second branch electrode, and the other end of the second connection branch electrode is connected to the second branch electrode.
  • the second connection branch electrodes of the adjacent touch units in the second direction are connected, and the first connection branch electrodes, the second connection branch electrodes, and the second branches in the same touch unit A floating electrode is provided in the area enclosed by the electrode and the second trunk electrode.
  • the second branch electrodes extend from the second trunk electrode near an end where the second trunk electrode intersects with the first trunk electrode, and are adjacent in the second direction
  • the two adjacent second branch electrodes of the two touch control units are connected to the other ends away from one end connected to the second trunk electrode, and the two adjacent touch control units are in the second direction.
  • a floating electrode is provided in the area enclosed by two adjacent second branch electrodes and two adjacent second main electrodes, and the floating electrode is electrically connected to the first electrode and the second electrode. insulation.
  • At least one of the first trunk electrode and the second trunk electrode is provided with a widened portion near the intersection of the first electrode and the second electrode.
  • the touch display device further includes a display panel, the touch layer is located on one side of the display panel, the display panel includes an organic light emitting diode array layer and an encapsulation layer, the encapsulation layer is The layer is located between the touch control layer and the organic light emitting diode array layer, and the encapsulation layer has a thickness of 5 micrometers to 15 micrometers.
  • the present application provides a touch display device, the touch display device includes a touch layer, the touch layer includes a plurality of touch units, each touch unit includes a first electrode and a second electrode, and the first electrode is connected with the first electrode.
  • the two electrodes are electrically insulated.
  • the resistance of the first electrode is greater than 0 ohm and less than or equal to 50 ohm, and the parasitic capacitance of the first electrode is greater than 0 picofarads and less than or equal to 18 picofarads;
  • the second electrode The resistance of the second electrode is greater than 0 ohms and less than or equal to 50 ohms, and the parasitic capacitance of the second electrode is greater than 0 picofarads and less than or equal to 18 picofarads.
  • the first and second electrodes in each touch unit are reduced
  • the time required for the mutual capacitance charging of the nodes between them reduces the mutual capacitance scanning time of the touch unit, thereby improving the touch reporting rate of the touch display device.
  • FIG. 1 is a schematic diagram of a touch display device of the present application
  • FIG. 2 is a schematic diagram of the touch control layer shown in FIG. 1;
  • FIG. 3 is a schematic diagram of a first structure of the touch layer of the touch display device shown in FIG. 1;
  • FIG. 4 is a schematic diagram of a second structure of the touch layer of the touch display device shown in FIG. 1;
  • FIG. 5A is a schematic diagram of a touch control unit 1 according to an embodiment of the present application.
  • FIG. 5B is a schematic diagram of the touch control unit 2 according to the embodiment of the present application.
  • FIG. 5C is a schematic diagram of the touch control unit 3 according to an embodiment of the present application.
  • FIG. 6A is a schematic diagram of the touch control unit 4 according to an embodiment of the present application.
  • FIG. 6B is a schematic diagram of the touch control unit 5 according to an embodiment of the present application.
  • FIG. 6C is a schematic diagram of the touch control unit 6 according to an embodiment of the present application.
  • FIG. 6D is a schematic diagram of the touch control unit 7 according to an embodiment of the present application.
  • FIG. 7A is a schematic diagram of a touch control unit 8 according to an embodiment of the present application.
  • FIG. 7B is a schematic diagram of the touch control unit of Comparative Example 3.
  • FIG. 7B is a schematic diagram of the touch control unit of Comparative Example 3.
  • the present application provides a touch display device.
  • the touch display device can be a flexible touch display device, and the touch display device can also be a hard touch display device.
  • the touch display device includes a touch layer and a display panel. The touch layer is located on one side of the display panel.
  • the touch layer includes a plurality of touch units arranged in an array, and each touch unit includes a first electrode arranged along a first direction and a second electrode arranged along a second direction.
  • the first electrode is connected to the second electrode.
  • the electrodes are electrically insulated, the first electrode and the second electrode form a mutual capacitive touch electrode, and the first direction is different from the second direction.
  • the resistance of the first electrode is greater than 0 ohm and less than or equal to 50 ohm, and the parasitic capacitance of the first electrode is greater than 0 picofarad and less than or equal to 18 picofarad; the resistance of the second electrode is greater than 0 ohm and is less than or equal to 50 ohms, and the parasitic capacitance of the second electrode is greater than 0 picofarads and less than or equal to 18 picofarads.
  • the parameters of each touch control unit are reduced.
  • the time for the mid-node mutual capacitance to be charged to the preset voltage thereby improving the touch reporting rate of the touch display device.
  • the resistance of the first electrode is greater than or equal to 5 ohms and less than or equal to 35 ohms, and the parasitic capacitance of the first electrode is greater than or equal to 2 picofarads and less than or equal to 17 picofarads ;
  • the resistance of the second electrode is greater than or equal to 5 ohms and less than or equal to 35 ohms, and the parasitic capacitance of the second electrode is greater than or equal to 2 picofarads and less than or equal to 17 picofarads.
  • the resistance of the first electrode is greater than or equal to 8 ohms and less than or equal to 25 ohms, and the parasitic capacitance of the first electrode is greater than or equal to 5 picofarads and less than or equal to 12 picofarads ;
  • the resistance of the second electrode is greater than or equal to 8 ohms and less than or equal to 25 ohms, and the parasitic capacitance of the second electrode is greater than or equal to 5 picofarads and less than or equal to 12 picofarads.
  • the resistance of the first electrode may be 2 ohms, 4 ohms, 8 ohms, 12 ohms, 16 ohms, 20 ohms, 24 ohms, 28 ohms, 32 ohms, 36 ohms, 40 ohms, 44 ohms or 48 ohms;
  • the parasitic capacitance of the first electrode can be 2 picofarads, 4 picofarads, 6 picofarads, 8 picofarads, 10 picofarads, 12 picofarads, 14 picofarads or 16 picofarads;
  • the resistance of the second electrode can be 2 ohms, 4 ohms, 8 ohms, 12 ohms, 16 ohms, 20 ohms, 24 ohms, 28 ohms, 32 ohms, 36 ohms, 40 ohm
  • the touch display device further includes a first lead, a second lead and a touch chip, the first lead is electrically connected to the first electrode of each touch unit, and the second lead is electrically connected to the first electrode of each touch unit.
  • the second electrode is electrically connected, the first lead and the second lead are electrically connected to the touch chip, and the resistance of each first lead and each second lead is greater than 0 ohm and less than or equal to 2500 ohm.
  • the electrical conductivity of the material of the first lead and the second lead can be increased or the line width of the first lead or the second lead can be increased to reduce the resistance of the first lead and the second lead, or by each first lead and each second lead
  • the leads are composed of multiple layers of wires to reduce the resistance of the first lead and the second lead.
  • the resistance of each first lead and each second lead is greater than or equal to 200 ohms and less than or equal to 2200 ohms.
  • the resistances of the first lead and the second lead may be 20 ohms, 50 ohms, 80 ohms, 100 ohms, 200 ohms, 500 ohms, 800 ohms, 1200 ohms, 1500 ohms, 1800 ohms, 2200 ohms and 2500 ohms.
  • the resistance of the first electrode is greater than or equal to 8 ohms and less than or equal to 30 ohms, and the parasitic capacitance of the first electrode is greater than or equal to 5 picofarads and less than or equal to 13 picofarads ;
  • the resistance of the second electrode is greater than or equal to 8 ohms and less than or equal to 30 ohms, and the parasitic capacitance of the second electrode is greater than or equal to 5 picofarads and less than or equal to 13 picofarads;
  • each first lead and each second lead is greater than or equal to 100 ohms and less than or equal to 2000 ohms.
  • the first electrode and the second electrode in each of the touch control units form a node mutual capacitance
  • the time for the node mutual capacitance to be charged to a preset voltage is less than or equal to a threshold time, so as to reduce The charging time of the node mutual capacitance, thereby shortening the mutual capacitance scanning time and improving the touch point reporting rate.
  • the touch display device further includes a touch chip, the percentage ratio of the preset voltage to the input voltage is 90%-100%, the threshold duration is less than or equal to 1.5 microseconds and greater than 0 microseconds, and the input voltage is controlled by the touch
  • the control chip is output to the touch unit.
  • the preset voltage is used to ensure that the touch unit can work normally and to ensure basic touch performance.
  • the percentage ratio of the preset voltage to the input voltage may be 90%, 92%, 95%, 97%, 98%, and 100%.
  • the threshold duration may be 0.4 microseconds, 0.5 microseconds, 0.55 microseconds, 0.65 microseconds, 0.7 microseconds, 0.9 microseconds, 1.0 microseconds, 1.2 microseconds, 1.25 microseconds, 1.35 microseconds, 1.5 microseconds.
  • the percentage ratio of the preset voltage to the input voltage is 95%, and the threshold duration is 1.35 microseconds.
  • the touch chip of the touch display device usually needs to work when the signal meets the time required for the node mutual capacitance to charge to the preset voltage is less than or equal to t. If the signal cannot meet the time requirement for charging to the preset voltage, the corresponding drive signal The waveform is distorted, which will affect the detection of the signal and the touch performance.
  • t is the time for the mutual capacitance node to charge to the preset voltage.
  • the number of touch units arranged in the same row along the first direction is greater than the number of touch units arranged in the same row along the second direction, and the parasitic capacitance of the first electrode is smaller than the parasitic capacitance of the second electrode.
  • the number of first electrodes arranged in the same row in the first direction When the number of touch units arranged in the same row in the first direction is greater than the number of touch units arranged in the same row in the second direction, the number of first electrodes arranged in the same row in the first direction will be greater than the number of first electrodes arranged in the same row in the second direction
  • the number of the set second electrodes by making the parasitic capacitance of the first electrode smaller than the parasitic capacitance of the second electrode, reduces the parasitic capacitance of the first electrode channel formed by the first electrodes arranged in the same row in the first direction, which is more conducive to
  • the transmission of the electrical signal on the first electrode channel especially, when the first electrode is the driving electrode, when the driving electrode is used for inputting the scanning signal, is more conducive to reducing the 3RC time constant.
  • the area of the first electrode is smaller than that of the second electrode, so that the parasitic capacitance of the first electrode in each touch unit is smaller than the parasitic capacitance of the second electrode.
  • the first electrode includes a first trunk electrode extending in a first direction and at least one first branch electrode extending from the first trunk electrode;
  • the second electrode includes a second trunk electrode extending along the second direction and at least one second branch electrode extending from the second trunk electrode.
  • the first trunk electrode extends along the first direction and is mainly used to conduct current parallel to the first direction, and the first branch electrode is mainly used to form a mutual capacitance with the second branch electrode to adjust the touch sensing amount.
  • the function of the second trunk electrode is basically the same as that of the first trunk electrode, and the function of the second branch electrode is basically the same as that of the first branch electrode.
  • the included angle between the first branch electrode and the first trunk electrode is greater than 0 degrees and less than 90 degrees, and may be, for example, 30 degrees, 40 degrees, 45 degrees, 50 degrees, 60 degrees, 70 degrees, and 80 degrees.
  • the included angle between the second branch electrode and the second trunk electrode is greater than 0 degrees and less than 90 degrees, for example, may be 30 degrees, 40 degrees, 45 degrees, 50 degrees, 60 degrees, 70 degrees and 80 degrees.
  • the angle between the first branch electrode and the first trunk electrode is equal to 45 degrees
  • the angle between the second branch electrode and the second trunk electrode is equal to 45 degrees.
  • a floating electrode is provided in the first trunk electrode, and/or a floating electrode is provided in at least one of the first branch electrodes, and/or a floating electrode is provided in the second trunk electrode, and /or, at least one second branch electrode is provided with a floating electrode, and the floating electrode is electrically insulated from the first electrode and the second electrode.
  • At least one first branch electrode is provided with a floating electrode
  • at least one second branch electrode is provided with a floating electrode.
  • the second electrode further includes a first connecting branch electrode, one end of the first connecting branch electrode is connected to the second trunk electrode, and the other end of the first connecting branch electrode is connected to the second branch electrode, each touch unit The area enclosed by the first connection branch electrode, the second trunk electrode and the second branch electrode is provided with a floating electrode, and the floating electrode is electrically insulated from the first electrode and the second electrode.
  • adding a first connection branch electrode between the second branch electrode and the second trunk electrode can increase the current transmission channel through which the current is conducted on the second electrode, thereby reducing the resistance of the second electrode, thereby reducing the node The time required for the mutual capacitance to charge to the preset voltage.
  • the area enclosed by the first connection branch electrode, the second trunk electrode and the second branch electrode of each touch unit is provided with a floating electrode, which can reduce the area of the second electrode, thereby reducing the parasitic capacitance of the second electrode.
  • the time required for the node mutual capacitance to be charged to the preset voltage is further reduced.
  • the second electrode further includes a second connecting branch electrode, one end of the second connecting branch electrode is connected to the second branch electrode, and the other end of the second connecting branch electrode is connected to the second connecting branch electrode in the second direction.
  • the two connection branch electrodes are connected, and the area enclosed by the first connection branch electrode, the second connection branch electrode, the second branch electrode and the second trunk electrode in the same touch unit is provided with a floating electrode.
  • the second connecting branch electrodes By setting the second connecting branch electrodes to increase the current transmission channels of the two adjacent second electrodes of the two adjacent touch units, the impedance of the second electrode channel is reduced, and the time required for the node mutual capacitance to charge to the preset voltage is reduced.
  • the area enclosed by the first connection branch electrode, the second connection branch electrode, the second branch electrode and the second trunk electrode in the same touch unit is provided with a floating electrode, so as to further reduce the impact of the second electrode. parasitic capacitance.
  • the second branch electrodes are extended from the second trunk electrode close to an end where the second trunk electrode intersects with the first trunk electrode, and two adjacent second trunk electrodes of two adjacent touch units in the second direction
  • the branch electrode is connected to the other end away from the end connected to the second trunk electrode, and the area enclosed by the adjacent two second branch electrodes and the adjacent two second trunk electrodes of the two adjacent touch units in the second direction
  • a floating electrode is provided inside.
  • the adjacent two adjacent second branch electrodes and the adjacent two adjacent second main electrodes of the two adjacent touch units are provided with floating electrodes in the area enclosed by the adjacent two second main electrodes, so as to reduce the parasitics of the second electrodes. capacitance.
  • At least one of the first stem electrode and the second stem electrode is provided with a widening near the intersection of the first electrode and the second electrode to lower at least one of the first electrode and the second electrode A resistance near the crossover location, thereby reducing the time required for the node mutual capacitance to charge to the preset voltage.
  • the touch display device further includes a display panel, the touch layer is located on one side of the display panel, the display panel includes an organic light emitting diode array layer and an encapsulation layer, and the encapsulation layer is located on the touch layer and the organic light emitting diode array Between layers, the thickness of the encapsulation layer is 5 ⁇ m to 15 ⁇ m. For example, the thickness of the encapsulation layer is 6 microns, 8 microns, 10 microns, 12 microns and 14 microns.
  • the encapsulation layer includes an organic layer, and the thickness of the organic layer is 6 micrometers to 12 micrometers.
  • the thickness of the organic layer is 6 microns, 8 microns, 10 microns and 11 microns.
  • the parasitic capacitance of the first electrode and the second electrode mainly comes from the parasitic capacitance with the common cathode, and the distance between the common cathode and the first electrode and the second electrode depends on the thickness of the encapsulation layer.
  • the touch chip charges the node mutual capacitance, it also charges the parasitic capacitance.
  • the parasitic capacitance is larger, the target node mutual capacitance is charged to a state that satisfies the electrical signal detection. For example, when charging to a preset voltage, the required The longer the scan time, the lower the corresponding touch reporting rate.
  • the first electrodes are drive electrodes and the second electrodes are sense electrodes.
  • both the first electrode and the second electrode are composed of metal meshes.
  • the metal wires that make up the metal grid surround the subpixels.
  • Node mutual capacitance In each touch unit, the first electrode and the second electrode form a node mutual capacitance, and the node mutual capacitance includes the mutual capacitance formed between the boundaries of the first electrode and the second electrode and the first electrode and the second electrode.
  • the basic capacitance formed by the overlap between the electrodes Generally speaking, only when the mutual capacitance formed between the boundaries of the first electrode and the second electrode is controlled in an appropriate range, it is beneficial to ensure the amount of touch signals, thereby improving touch performance such as touch sensitivity.
  • the smaller the basic capacitance formed by the overlapping portion between the electrodes the more favorable it is to improve the touch reporting rate.
  • the touch chip scans and drives the driving electrodes with electrical signals, it is equivalent to charging and discharging the node mutual capacitance formed at the intersection of the corresponding driving electrodes and the sensing electrodes. to detect where the finger is touching.
  • 3RC Settling time is a time constant for the output signal to reach 95% of the amplitude state of the input signal.
  • the time constant is determined by the resistance, capacitance and distribution of the touch screen itself.
  • the input signal is determined by the touch screen.
  • the control chip outputs the voltage to the driving electrode, and the output signal is the voltage written to the node mutual capacitance.
  • the 3RC time constant of the mutual capacitance of each node on the corresponding touch screen body is determined. Usually the node mutual capacitance on the touch screen body takes the longest time to charge to 95% of the input signal amplitude.
  • the reporting rate of the touch screen is usually determined by the 3RC time constant of the node mutual capacitance that takes the longest time to charge the node mutual capacitance on the screen to 95% of the input signal amplitude.
  • the touch reporting rate is equal to the reciprocal of the time-consuming (unit: seconds) of one frame of touch.
  • the time-consuming of one frame of touch includes self-capacitance scanning time, mutual-capacitance scanning time, and self-capacitive switching time. and reset time, of which most of the time taken for one frame of touch is the mutual capacitance scanning time, and the mutual capacitance switching time and reset time are usually determined by the touch chip.
  • the time required for mutual capacitance scanning is usually determined by the 3RC time constant of the screen itself under the condition that the scanning frequency of the touch chip is satisfied.
  • FIG. 1 is a schematic diagram of the touch display device of the present application.
  • the touch display device includes an organic light emitting diode display panel 10 , a touch layer 20 , a polarizer 30 and a protective cover 40 .
  • the organic light emitting diode display panel 10 includes a substrate 100 , a thin film transistor array layer 101 , an organic light emitting diode array layer 102 and an encapsulation layer 103 .
  • the substrate 100 is a flexible substrate.
  • the thin film transistor array layer 101 is disposed on the substrate 100 , and the thin film transistor array layer 101 includes a plurality of thin film transistors arranged in an array.
  • the organic light emitting diode array layer 102 is disposed on the side of the thin film transistor array layer 101 away from the substrate 100 .
  • the organic light emitting diode array layer 102 includes a plurality of organic light emitting diodes arranged in an array, and the plurality of organic light emitting diodes include a plurality of independent anodes, an organic light emitting layer disposed on each anode, and a common cathode, that is, a plurality of organic light emitting diodes A common cathode is shared, and the common cathode is an entire metal conductive layer.
  • Each organic light emitting diode constitutes a sub-pixel.
  • the sub-pixels include red sub-pixels, blue sub-pixels, and green sub-pixels.
  • the encapsulation layer 103 is used to protect the organic layer and the common cathode in the organic light emitting diode array layer 102, and prevent the organic layer and the common cathode from being corroded by water vapor and oxygen.
  • the encapsulation layer 103 is disposed on the side of the organic light emitting diode array layer 102 away from the thin film transistor array layer 101 .
  • the encapsulation layer 103 may be a thin film encapsulation layer, and the thin film encapsulation layer includes two inorganic layers and an organic layer disposed between the two inorganic layers.
  • the touch layer 20 includes a buffer layer 201 , a second connection portion 202 , a first passivation layer 203 , a first electrode 204 , a second electrode 205 and a second passivation layer 206 .
  • the buffer layer 201 is an insulating layer, and the preparation material of the buffer layer 201 is at least one selected from silicon nitride and silicon oxide.
  • the second connection portion 202 is disposed on the buffer layer 201 , the second connection portion 202 has conductivity, and the second connection portion 202 is two V-shaped bridge lines arranged at intervals.
  • the first passivation layer 203 covers the second connection portion 202 and the buffer layer 201 .
  • the preparation material of the first passivation layer 203 is selected from at least one of silicon nitride and silicon oxide.
  • the first electrode 204 and the second electrode 205 are disposed on the first passivation layer 203, and the first electrode 204 and the second electrode 205 are electrically insulated, and the first electrode 204 is connected by a first connection part (not shown) , the first electrode 204 and the first connection portion are disposed in the same layer and formed continuously.
  • the second passivation layer 206 covers the first electrode 204 and the second electrode 205 .
  • the two adjacent second electrodes 205 are connected through the second connection portion 202 , and each second electrode 205 is connected to the second connection portion 202 through a via hole on the first passivation layer 203 .
  • the first electrode 204 , the second electrode 205 , the second connection portion 202 and the first connection portion constitute a touch electrode.
  • the overlapping portion between the second connection portion 202 and the first electrode 204 forms a base capacitance.
  • the first electrode 204 , the second electrode 205 , the second connection portion 202 and the first connection portion are all composed of metal meshes.
  • the metal grid is arranged around the sub-pixels of the organic light emitting diode array layer to avoid blocking the light of the sub-pixels.
  • FIG. 3 is a schematic diagram of a first structure of the touch layer of the touch display device shown in FIG. 1 .
  • the first electrodes 204 of the plurality of touch units 207 arranged in the same row in the first direction are electrically connected to form a first electrode channel
  • the second electrodes of the plurality of touch units 207 arranged in the same row in the second direction are electrically connected 205 is electrically connected to form a second electrode channel.
  • Both ends of each first electrode channel are connected to the first lead 208, and one end of each second electrode channel is connected to the second lead 209, that is, the touch layer adopts a 2T1R structure.
  • the first electrodes are driving electrodes
  • the second electrodes are sensing electrodes.
  • Scanning is performed in a group of 4 first electrode channels in the second direction, for example, the 1st to 4th first electrode channels are scanned as a group, and the 5th to 8th first electrode channels are scanned as a group.
  • the 9th to 12th first electrode channels are scanned as a group
  • the 13th to 16th first electrode channels are scanned as a group
  • the 17th first electrode channel is scanned as a group .
  • Each group of the first electrode channel is scanned four times, and each scan corresponds to a group of waveforms.
  • Each group of waveforms includes 48 standard square waves. Therefore, the mutual capacitance scanning time required to scan a complete touch display device is 5 ⁇ 4 ⁇ 48 ⁇ 2 ⁇ t, where the time corresponding to a standard square wave is 2 ⁇ t, and t is the longest time required when the node mutual capacitance is charged to 95% of the input voltage.
  • the node mutual capacitance M that takes the longest time to charge the touch layer to 95% of the input voltage is located at a position away from the middle of the touch layer, such as the first first electrode channel and the 19th second electrode channel Nodal mutual capacitance at the intersection.
  • the screen mutual capacitance scanning time mainly consists of N groups of mutual capacitance scanning waveforms, and the time of N groups of mutual capacitance scanning waveforms constitutes the entire mutual capacitance scanning period.
  • the number of , and the drive grouping of the first electrode channel are related.
  • FIG. 4 is a schematic diagram of a second structure of the touch layer of the touch display device shown in FIG. 1 .
  • the touch layer shown in FIG. 4 is basically similar to the touch layer shown in FIG. 3 .
  • the structure of the touch layer shown in FIG. 4 is different from that shown in FIG. 3 in that one end of each first electrode channel is connected to the first lead 208 .
  • One end of each second electrode channel is connected to the second lead 209, that is, the touch layer adopts a 1T1R structure.
  • the arrangement design of the first electrode and the second electrode in this embodiment is the same as that of the touch layer shown in FIG. 3 , and the group scanning method is also the same as that of the second embodiment.
  • the node mutual capacitance M that takes the longest time to charge to 95% of the input voltage on the touch layer is located at a position far from the input signal of the touch chip, such as the first electrode channel and the 37th electrode channel.
  • a second electrode channel crosses.
  • This embodiment and comparative example 1 aim to study the effect of reducing the resistance of the sensing electrode, parasitic capacitance and the resistance of the sensing electrode channel on the time required for the mutual capacitance of the node to be charged to 95% of the input voltage, touch units 1-3 and comparative example
  • the simulation results of 1 are shown in Table 1.
  • the touch unit 1 includes a first electrode 204 and a second electrode 205 .
  • the first electrode 204 includes a first trunk electrode 2041 and a first branch electrode 2043.
  • the first branch electrode 2043 extends from the first trunk electrode 2041 at the intersection of the first electrode 204 and the second electrode 205.
  • the first trunk electrode 2041 Extending toward the first direction, the angle between the first branch electrode 2043 and the first trunk electrode 2041 is equal to 45 degrees.
  • the second trunk electrode 205 includes a second trunk electrode 2051 and a second branch electrode 2053.
  • the second branch electrode 2053 extends from the second trunk electrode 2051 at the intersection of the first electrode 204 and the second electrode 205, and the second branch electrode 2053 The included angle with the second trunk electrode 2051 is equal to 45 degrees.
  • Each second branch electrode 2053 surrounds one first branch electrode 2043 adjacent to the second branch electrode 2053. Adjacent two second branch electrodes 2053 of two adjacent touch units in the second direction are connected.
  • a floating electrode 206 is provided in the area enclosed by the second trunk electrodes 2051 and the second branch electrodes 2053 of two adjacent touch units in the second direction, and the second The ratio of the area of the floating electrode 206 provided in the area enclosed by the trunk electrode 2051 and the second branch electrode 2053 to the area of each second branch electrode 2053 is 4:5.
  • the floating electrode 206 and the first electrode 204 and the second The electrodes 205 are electrically insulated.
  • Floating electrodes 206 are provided in the area enclosed by two adjacent first main electrodes and two adjacent second branch electrodes 2053 of two adjacent touch units in the first direction to avoid adjacent ones in the first direction
  • the two adjacent second branch electrodes 2053 of the two touch units are disconnected to avoid short circuit between them.
  • FIG. 5B is a schematic diagram of the touch control unit 2 according to the embodiment of the present application.
  • the touch unit 2 shown in FIG. 5B is basically similar to the touch unit 1 shown in FIG. 5A , the difference is that the second trunk electrodes 2051 and the second branch electrodes 2053 of two adjacent touch units in the second direction are surrounded by The combined area is provided with a ratio of the area of the floating electrode 206 to the area of each second branch electrode 2053 to be 1:10.
  • FIG. 5C is a schematic diagram of the touch control unit 3 according to the embodiment of the present application.
  • the touch unit 3 shown in FIG. 5C is basically similar to the touch unit 1 shown in FIG. 5A , the difference is that the second electrode 205 includes a first connection branch electrode 2054 and a second connection branch electrode 2055 , and the first connection branch electrode 2054 One end is connected to the second stem electrode 2051, and the other end of the first connecting branch electrode 2054 is connected to the second branch electrode 2053.
  • the first connecting branch electrode 2054, the second stem electrode 2051 and the second branch electrode 2053 of each touch unit The enclosed area is provided with floating electrodes 206 .
  • One end of the second connecting branch electrode 2055 is connected to the second branch electrode 2053, and the other end of the second connecting branch electrode 2053 is connected to the second connecting branch electrode 2053 of the adjacent touch unit in the second direction.
  • a floating electrode 206 is provided in the area enclosed by the first connection branch electrode 2054 , the second connection branch electrode 2055 , the second branch electrode 2053 and the second trunk electrode 2051 .
  • the touch unit of Comparative Example 1 is basically similar to the touch unit shown in FIG. 5A , the difference is that the touch unit of Comparative Example 1 is adjacent to the second trunk electrodes 2051 , the second stem electrodes 2051 of the two adjacent touch units in the second direction, and the The area enclosed by the two branch electrodes 2053 is not provided with the floating electrode 206 .
  • Unit Cs_Tx is the parasitic capacitance of the first electrode in the touch unit
  • Unit Cs_Rx is the parasitic capacitance of the second electrode in the touch unit
  • Unit R_Tx is the resistance of the first electrode in the touch unit
  • Unit R_Rx is the resistance of the first electrode in the touch unit
  • the resistance of the second electrode, R_Rx is the resistance of the second lead 209 connected to the mutual capacitance of the node that takes the longest time to charge to 95% of the input voltage on the touch layer
  • the 3RC time constant is the resistance of the mutual capacitance of the node to charge the input voltage to the input voltage. 95% takes the longest time.
  • the above touch units 1-3 and the comparative example 1 all adopt the touch layer driving structure of the second embodiment.
  • the 3RC time constants of the touch units 1-3 are all smaller than those of the comparative example 1, and the 3RC time constants of the touch units 1-3 are all Less than 1.35 microseconds
  • the touch reporting rate of the touch units 1-3 is greater than that of the comparative example 1
  • the maximum touch reporting rate of the touch units 1-3 is 264Hz
  • the touch units 1-3 Compared with the touch reporting rate of Comparative Example 1, the touch reporting rate of 1 is increased by at least 11.11%.
  • the main reason is that the parasitic capacitance of the second electrode 205 of the touch unit 1-3 is smaller than that of the second electrode 205 of Comparative Example 1.
  • the 3RC time constant of the touch unit 3 is relatively small, mainly because the touch unit 3 includes the first connection branch electrode 2054 and the second connection branch electrode 2055 , which increases the current transmission channel of the second electrode 205 and reduces the second electrode 205, reducing the resistance of the second electrode 205 is beneficial to reduce the time required for the node mutual capacitance to charge to 95% of the input voltage.
  • the 3RC time constant of the touch unit 2 is the same as the 3RC time constant of the touch unit 1.
  • the parasitic capacitance of the second electrode 205 of the touch unit 1 is significantly smaller than the parasitic capacitance of the second electrode 205 of the touch unit 2, while The parasitic capacitance of the first electrode 204 of the touch unit 1 is slightly larger than the parasitic capacitance of the first electrode 204 of the touch unit 2.
  • the first electrode 204 is used as a driving electrode for inputting scan signals, and the parasitic capacitance of the first electrode 204 is reduced. It is more beneficial to reduce the 3RC time constant than the reduction of the parasitic capacitance of the second electrode 205 .
  • the smaller parasitic capacitance of the second electrode 205 is also beneficial to reduce the 3RC time constant.
  • the 3RC time constant is 1.326 microseconds, and the frequency of the mutual capacitance scanning waveform output by the touch control chip is set to 377KHz.
  • This embodiment and comparative example 2 aim to study the influence of the floating electrodes in the driving electrodes and the sensing electrodes in the touch control unit on the resistance and parasitic capacitance of the driving electrodes and the sensing electrodes, and to study the resistance and parasitic capacitance of the driving electrodes and the sensing electrodes.
  • the simulated data of touch units 4-7 and Comparative Example 2 are shown in Table 2.
  • the touch unit 4 includes a first electrode 204 and a second electrode 205.
  • the first electrode 204 includes a first trunk electrode 2041, a first vertical trunk electrode 2042 and a first branch electrode 2043.
  • the first trunk electrode 2041 and the first vertical trunk electrode 2042 are perpendicular to each other, the first branch electrode 2043 is extended from the first trunk electrode 2041 and the first vertical trunk electrode 2042, and the space between the first branch electrode 2043 extended from the first trunk electrode 2041 and the first trunk electrode 2041 is The included angle is equal to 45 degrees, and the included angle between the first branch electrodes 2043 extending from the first vertical trunk electrodes 2042 and the first vertical trunk electrodes 2042 is equal to 45 degrees.
  • the second electrode 205 includes a second trunk electrode 2051, a second vertical trunk electrode 2052 and a second branch electrode 2053. The second trunk electrode 2051 and the second vertical trunk electrode 2052 are perpendicular to each other, and the second branch electrode 2053 is formed by the second trunk electrode 2053.
  • the electrode 2051 and the second vertical trunk electrode 2052 extend out, and the angle between the second branch electrode 2053 extended from the second trunk electrode 2051 and the second trunk electrode 2051 is equal to 45 degrees, and the second vertical trunk electrode 2052 extends out The included angle between the second branch electrode 2053 and the second vertical stem electrode 2052 is equal to 45 degrees.
  • the two first trunk electrodes 2041 at the intersection of the first electrode 204 and the second electrode 205 are connected by two pairs of V-shaped bridge wires arranged at intervals.
  • the two second trunk electrodes 2051 are connected by a connecting portion, and the connecting portion is provided in the same layer as the first electrode 204 and the second electrode 205 .
  • the first electrode 204 and the second electrode 205 are symmetrically disposed with respect to the first trunk electrode 2041 and the second trunk electrode 2051 .
  • the first branch electrode 2043 is parallel to the second branch electrode 2053 adjacent to the first branch electrode 2043 .
  • Part of the first branch electrodes 2043 and part of the second branch electrodes 2053 are arranged to intersect.
  • the first branch electrode 2043 includes a first widened portion and a first connection portion corresponding to the first widened portion
  • the second branch electrode 2053 includes a second widened portion and a second connection portion corresponding to the second widened portion.
  • the first widened portion of the first branch electrode 2043 is arranged corresponding to the second connection portion of the adjacent second branch electrode 2053 , and the first connection portion of the first branch electrode 2043 is corresponding to the second connection portion of the adjacent second branch electrode 2053 .
  • the widened part corresponds to the setting.
  • FIG. 6B which is a schematic diagram of the touch control unit 5 according to the embodiment of the present application.
  • the touch unit 5 is basically similar to the touch unit 4, except that the first branch electrodes 2043 and the second branch electrodes 2053 are provided with floating electrodes 206, and the first trunk electrodes 2041 and the second trunk electrodes 2051 are not A floating electrode 206 is provided, the floating electrode 206 is electrically insulated from the first electrode 204 and the second electrode 205 , and the floating electrode 206 does not carry an electrical signal.
  • FIG. 6C which is a schematic diagram of the touch control unit 6 according to the embodiment of the present application.
  • the touch control unit 6 is basically similar to the touch control unit 5, except that the floating electrodes 206 are provided in the first trunk electrode 2041 and the second trunk electrode 2051, and the first branch electrodes 2043 and the second branch electrodes 2053 are not provided
  • the ratio of the area of the first trunk electrode 2041 to the area of the floating electrode 206 in the first trunk electrode 2041 is 7:3, and the area of the second trunk electrode 2051 is equal to the floating electrode 2051 in the second trunk electrode 2051.
  • the ratio of the areas of the electrodes 206 is 7:3, the area of the first trunk electrode 2041 does not include the area of the floating electrode 206 , and the area of the second trunk electrode 2051 does not include the area of the floating electrode 206 .
  • FIG. 6D is a schematic diagram of the touch control unit 7 according to the embodiment of the present application.
  • the touch control unit 7 is basically similar to the touch control unit 5, except that the first trunk electrode 2041, the second trunk electrode 2051, the first branch electrode 2043 and the second branch electrode 2053 are all provided with floating electrodes 206.
  • the ratio of the area of a trunk electrode 2041 to the area of the floating electrode 206 in the first trunk electrode 2041 is 7:3, and the ratio of the area of the second trunk electrode 2051 to the area of the floating electrode 206 in the second trunk electrode 2051 The ratio is 7:3, wherein the area of the first trunk electrode 2041 does not include the area of the floating electrode 206 , and the area of the second trunk electrode 2051 does not include the area of the floating electrode 206 .
  • the touch unit of Comparative Example 2 is basically similar to the touch unit shown in FIG. 6C , the difference is that in the touch unit of Comparative Example 2, the area of the first trunk electrode 2041 is the same as the floating area in the first trunk electrode 2041 .
  • the ratio of the area of the electrodes 206 is 5:5, and the ratio of the area of the second trunk electrode 2051 to the area of the floating electrode 206 in the second trunk electrode 2051 is 5:5.
  • the touch control units 4-7 and the comparative example 2 adopt the touch control structure diagram of the touch control layer shown in FIG. 4 . It can be seen from Table 2 that the 3RC time constants of the touch units 4-7 are smaller than that of the comparative example 2, and the 3RC time constants of the touch units 4-7 are all less than 1.5 microseconds.
  • the main reason is that there are more floating electrodes 206 in the first trunk electrode 2041 of the first electrode 204 and the second trunk electrode 2051 of the second electrode 205 in Comparative Example 2, resulting in a higher impedance of the first electrode 205 and the second electrode 206
  • the parasitic capacitances of the first electrode 204 and the second electrode 205 are relatively small, due to the large impedance of the first electrode 204 and the second electrode 205, the adverse effect on the charging of the node mutual capacitance exceeds that of the first electrode 204 and the second electrode
  • the small parasitic capacitance of 205 has a favorable effect on the charging of the node mutual capacitance, resulting in the 3RC time constant of Comparative Example 2 as high as 1.605 microseconds.
  • the 3RC time constant of the touch control unit 4 is greater than that of the touch control unit 5, the main reason being that the touch control unit 5 is provided with the floating electrodes 206 in the first branch electrode 2043 and the second branch electrode 2053, reducing the size of the first electrode 204 and the area of the second electrode 205, so that the parasitic capacitance of the first electrode 204 and the second electrode 205 is reduced, and the reduction of the area of the first branch electrode 2043 and the second branch electrode 2053 will not affect the first electrode 204 and the second resistance of the two electrodes 205 .
  • the 3RC time constant of the touch unit 6 is greater than the 3RC time constant of the touch unit 4.
  • the main reason is that the floating electrodes 206 are provided in the first trunk electrode 2041 and the second trunk electrode 2051 of the touch unit 6 to reduce the number of first electrodes. 204 and the area of the second electrode 205 to reduce the parasitic capacitance of the first electrode 204 and the second electrode 205, while the resistance of the first trunk electrode 2041 and the second trunk electrode 2051 increases, the first trunk electrode 2041 and the second trunk electrode 2041 and the second trunk electrode
  • the electrode 2051 is mainly used to conduct current, and the impedance of the first electrode 204 and the second electrode 205 increases, resulting in a larger 3RC time constant.
  • the 3RC time constant of the touch unit 7 is smaller than the 3RC time constant of the touch unit 6.
  • first branch electrodes 2043 and the second branch electrodes 2053 of the touch unit 7 are provided with floating electrodes 206.
  • Providing the floating electrode 206 makes the parasitic capacitance of the first electrode 204 and the second electrode 205 smaller, thereby making the 3RC time constant smaller.
  • the examples of the present application and the comparative example 3 aim to study the effect of adding a widened portion at the intersection of the first electrode and the second electrode on the resistance, and to study the time required for the reduction of the resistance to charge the node mutual capacitance to 95% of the input voltage (3RC time constant), the simulated data of touch unit 8 and comparative example 3 are shown in Table 3.
  • FIG. 7A is a schematic diagram of the touch control unit 8 according to the embodiment of the present application.
  • the touch unit 8 includes a first electrode 204 and a second electrode 205 .
  • the first electrode 204 includes two first isosceles right triangle electrodes
  • the second electrode 205 includes two second isosceles right triangle electrodes
  • the two first isosceles right triangle electrodes of the first electrode 204 are electrically connected in the first direction.
  • the two second isosceles right triangle electrodes of the second electrode are electrically connected in the second direction.
  • a concave portion 204a is provided on two adjacent edges of the first isosceles right triangle electrode and near the intersection of the first electrode 204 and the second electrode 205, and a protrusion is provided on the corresponding edge of the second isosceles right triangle electrode.
  • Each indented portion 204a cooperates with each raised portion 205a.
  • the first electrode 204 is a driving electrode
  • the second electrode 205 is a sensing electrode.
  • FIG. 7B which is a schematic diagram of Comparative Example 3.
  • the touch unit of Comparative Example 3 is basically similar to the touch unit 8, except that the touch unit of Comparative Example 3 is not provided with the recessed portion 204a and the raised portion 205a.
  • the touch control unit 8 and the touch control unit of Comparative Example 3 adopt the touch control structure shown in FIG. 3 .
  • the 3RC time constant of the touch control unit 8 is smaller than the 3RC time constant of the comparative example 3.
  • the main reason is that the second electrode 205 in the touch control unit 8 is provided with a raised portion 205 a near the intersection of the first electrode 204 and the second electrode 205 .
  • the width of the main electrode of the second electrode 205 increases near the intersection of the first electrode 204 and the second electrode 205 , so that the resistance of the second electrode 205 is smaller, and the first electrode 204 is provided with an indented portion 204 a , the resistance of the main electrode of the first electrode 204 will not be significantly affected, and the reduction of the resistance of the second electrode 205 makes the 3RC time constant of the touch control unit 8 smaller.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Quality & Reliability (AREA)
  • Position Input By Displaying (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

本申请提供一种触控显示装置，触控层包括多个触控单元，每个触控单元包括一个第一电极以及一个第二电极，每个触控单元中，第一电极的电阻大于0且小于或等于50欧姆，且第一电极的寄生电容大于0且小于或等于18皮法；第二电极的电阻大于0且小于或等于50欧姆，且第二电极的寄生电容大于0且小于或等于18皮法。

Description

触控显示装置 技术领域
本申请涉及触控技术领域，尤其涉及一种触控显示装置。
背景技术
电容式触摸屏由于其高耐久性以及长寿命，并且支持多点触控的功能，广泛应用于各种电子交互场景设备中。对于电容式触摸屏，触控报点率越高，则用户的触摸操作越流畅，反之，触控报点率越低，则触摸操作体验越差。
因此，有必要提供一种技术方案以提高触控显示装置的报点率。
技术问题
本申请的目的在于提供一种触控显示装置，该触控显示装置具有高的触控报点率。
技术解决方案
为了实现上述目的，本申请提供一种所述触控显示装置包括触控层，所述触控层包括多个触控单元，每个所述触控单元包括一个沿第一方向设置的第一电极以及一个沿第二方向设置的第二电极，所述第一电极与所述第二电极电性绝缘，所述第一方向与所述第二方向相异，每个所述触控单元中，
所述第一电极的电阻大于0欧姆且小于或等于50欧姆，且所述第一 电极的寄生电容大于0皮法且小于或等于18皮法；
所述第二电极的电阻大于0欧姆且小于或等于50欧姆，且所述第二电极的寄生电容大于0皮法且小于或等于18皮法。
在上述触控显示装置中，每个所述触控单元中，所述第一电极的电阻大于或等于5欧姆且小于或等于35欧姆，且所述第一电极的寄生电容大于或等于2皮法且小于或等于17皮法；
所述第二电极的电阻大于或等于5欧姆且小于或等于35欧姆，且所述第二电极的寄生电容大于或等于2皮法且小于或等于17皮法。
在上述触控显示装置中，所述触控显示装置还包括第一引线、第二引线以及触控芯片，所述第一引线与每个所述触控单元的所述第一电极电性连接，所述第二引线与每个触控单元的所述第二电极电性连接，所述第一引线以及所述第二引线与所述触控芯片电性连接，每个所述第一引线和每个所述第二引线的电阻均大于0欧姆且小于或等于2500欧姆。
在上述触控显示装置中，每个所述触控单元中，
所述第一电极的电阻大于或等于8欧姆且小于或等于30欧姆，且所述第一电极的寄生电容大于或等于5皮法且小于或等于13皮法；
所述第二电极的电阻大于或等于8欧姆且小于或等于30欧姆，且所述第二电极的寄生电容大于或等于5皮法且小于或等于13皮法；
每个所述第一引线和每个所述第二引线的电阻大于或等于100欧姆且小于或等于2000欧姆。
在上述触控显示装置中，每个所述第一引线和每个所述第二引线的电 阻大于或等于200欧姆且小于或等于2200欧姆。
在上述触控显示装置中，每个所述触控单元中的所述第一电极和所述第二电极之间形成节点互电容，所述节点互电容充电至预设电压的时间小于或等于阈值时长。
在上述触控显示装置中，所述触控显示装置还包括触控芯片，所述预设电压与输入电压的比值百分数为90％-100％，所述阈值时长小于或等于1.5微秒且大于0微秒，所述输入电压由所述触控芯片输出至所述触控单元。
在上述触控显示装置中，所述预设电压与所述输入电压的比值百分数为95％，所述阈值时长为1.35微秒。
在上述触控显示装置中，沿所述第一方向上同排设置的所述触控单元的数目大于沿所述第二方向同排设置的所述触控单元的数目，所述第一电极的寄生电容小于所述第二电极的寄生电容。
在上述触控显示装置中，每个所述触控单元中，所述第一电极的面积小于所述第二电极的面积。
在上述触控显示装置中，所述第一电极包括沿所述第一方向延伸的第一主干电极以及由所述第一主干电极延伸出的至少一个第一分支电极；
所述第二电极包括沿所述第二方向延伸的第二主干电极以及由所述第二主干电极延伸出的至少一个第二分支电极。
在上述触控显示装置中，所述第一主干电极内设置有浮置电极，和/或，至少一个所述第一分支电极内设置有浮置电极，和/或，所述第 二主干电极内设置有浮置电极，和/或，至少一个所述第二分支电极内设置有浮置电极，所述浮置电极与所述第一电极以及所述第二电极电性绝缘。
在上述触控显示装置中，至少一个所述第一分支电极内设置有所述浮置电极，和/或，至少一个所述第二分支电极内设置有所述浮置电极。在上述触控显示装置中，所述第二电极还包括第一连接分支电极，所述第一连接分支电极的一端连接所述第二主干电极，且所述第一连接分支电极的另一端连接所述第二分支电极，每个所述触控单元的所述第一连接分支电极、所述第二主干电极以及所述第二分支电极围合的区域设置有浮置电极，所述浮置电极与所述第一电极以及所述第二电极电性绝缘。
在上述触控显示装置中，所述第二电极还包括第二连接分支电极，所述第二连接分支电极的一端连接所述第二分支电极，所述第二连接分支电极的另一端与所述第二方向上相邻所述触控单元的所述第二连接分支电极连接，同一个所述触控单元中的所述第一连接分支电极、所述第二连接分支电极、第二分支电极以及所述第二主干电极围合的区域设置有浮置电极。
在上述触控显示装置中，所述第二分支电极由所述第二主干电极靠近所述第二主干电极与所述第一主干电极交叉的一端延伸出，在所述第二方向上相邻两个所述触控单元的相邻两个所述第二分支电极远离与所述第二主干电极连接的一端的另一端连接，在所述第二方向上相邻两个所述触控单元的相邻两个所述第二分支电极以及相邻两个第 二主干电极围合的区域内设置有浮置电极，所述浮置电极与所述第一电极以及所述第二电极电性绝缘。
在上述触控显示装置中，在靠近所述第一电极和所述第二电极交叉位置处，所述第一主干电极和所述第二主干电极中的至少一者设置有加宽部。
在上述触控显示装置中，所述触控显示装置还包括显示面板，所述触控层位于所述显示面板的一侧，所述显示面板包括有机发光二极管阵列层以及封装层，所述封装层位于所述触控层和所述有机发光二极管阵列层之间，所述封装层的厚度为5微米-15微米。
有益效果
本申请提供一种触控显示装置，触控显示装置包括触控层，触控层包括多个触控单元，每个触控单元包括一个第一电极以及一个第二电极，第一电极与第二电极电性绝缘，每个触控单元中，第一电极的电阻大于0欧姆且小于或等于50欧姆，且第一电极的寄生电容大于0皮法且小于或等于18皮法；第二电极的电阻大于0欧姆且小于或等于50欧姆，且第二电极的寄生电容大于0皮法且小于或等于18皮法。通过同时对每个触控单元中第一电极的电阻和寄生电容以及每个触控单元中第二电极的电阻和寄生电容进行优化，以降低每个触控单元中第一电极和第二电极之间的节点互电容充电所需时间，降低触控单元的互容扫描时间，从而提高触控显示装置的触控报点率。
附图说明
图1为本申请触控显示装置的示意图；
图2为图1所示触控层的示意图；
图3为图1所示触控显示装置的触控层的第一种架构示意图；
图4为图1所示触控显示装置的触控层的第二种架构示意图；
图5A为本申请实施例触控单元1的示意图；
图5B为本申请实施例触控单元2的示意图；
图5C为本申请实施例触控单元3的示意图；
图6A为本申请实施例触控单元4的示意图；
图6B为本申请实施例触控单元5的示意图；
图6C为本申请实施例触控单元6的示意图；
图6D为本申请实施例触控单元7的示意图；
图7A为本申请实施例触控单元8的示意图；
图7B为对比例3的触控单元的示意图。
本发明的实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请提供一种触控显示装置，触控显示装置可以为柔性触控显示装 置，触控显示装置也可以为硬质触控显示装置。触控显示装置包括触控层以及显示面板。触控层位于显示面板的一侧。
触控层包括多个阵列排布的触控单元，每个触控单元包括一个沿第一方向设置的第一电极以及一个沿第二方向设置的第二电极，第一电极与所述第二电极电性绝缘，第一电极和第二电极组成互容式触控电极，第一方向与第二方向相异。
每个触控单元中，第一电极的电阻大于0欧姆且小于或等于50欧姆，且第一电极的寄生电容大于0皮法且小于或等于18皮法；第二电极的电阻大于0欧姆且小于或等于50欧姆，且第二电极的寄生电容大于0皮法且小于或等于18皮法。通过优化每个触控单元中的第一电极的电阻的参数、第一电极的寄生电容的参数、第二电极的电阻的参数以及第二电极的寄生电容的参数，以降低每个触控单元中节点互电容充电至预设电压的时间，从而提高触控显示装置的触控报点率。
在一些实施例中，每个触控单元中，第一电极的电阻大于或等于5欧姆且小于或等于35欧姆，且第一电极的寄生电容大于或等于2皮法且小于或等于17皮法；第二电极的电阻大于或等于5欧姆且小于或等于35欧姆，且第二电极的寄生电容大于或等于2皮法且小于或等于17皮法。
在一些实施例中，每个触控单元中，第一电极的电阻大于或等于8欧姆且小于或等于25欧姆，且第一电极的寄生电容大于或等于5皮法且小于或等于12皮法；第二电极的电阻大于或等于8欧姆且小于或等于25欧姆，且第二电极的寄生电容大于或等于5皮法且小于或等 于12皮法。
每个触控单元中，第一电极的电阻可以为2欧姆、4欧姆、8欧姆、12欧姆、16欧姆、20欧姆、24欧姆、28欧姆、32欧姆、36欧姆、40欧姆、44欧姆或48欧姆；第一电极的寄生电容可以为2皮法、4皮法、6皮法、8皮法、10皮法、12皮法、14皮法或16皮法；第二电极的电阻可以为2欧姆、4欧姆、8欧姆、12欧姆、16欧姆、20欧姆、24欧姆、28欧姆、32欧姆、36欧姆、40欧姆、44欧姆或48欧姆；第二电极的寄生电容为2皮法、4皮法、6皮法、8皮法、10皮法、12皮法、14皮法或16皮法。
在一些实施例，触控显示装置还包括第一引线、第二引线以及触控芯片，第一引线与每个触控单元的第一电极电性连接，第二引线与每个触控单元的第二电极电性连接，第一引线以及第二引线与触控芯片电性连接，每个第一引线和每个第二引线的电阻均大于0欧姆且小于或等于2500欧姆。第一引线和第二引线的电阻越小，第一引线和第二引线的阻抗越小，越有利于信号的传输，降低引线的阻抗导致的阻容延时，从而减小节点互电容充电至预设电压所需时间。可以提高第一引线和第二引线的材料导电性或者增加第一引线或者第二引线的线宽以降低第一引线和第二引线的电阻，也可以通过每个第一引线和每个第二引线由多层导线组成以降低第一引线和第二引线的电阻。
在一些实施例中，每个第一引线和每个第二引线的电阻大于或等于200欧姆且小于或等于2200欧姆。具体地，第一引线和第二引线的电阻可以为20欧姆、50欧姆、80欧姆、100欧姆、200欧姆、500 欧姆、800欧姆、1200欧姆、1500欧姆、1800欧姆、2200欧姆以及2500欧姆。
在一些实施例中，每个触控单元中，第一电极的电阻大于或等于8欧姆且小于或等于30欧姆，且第一电极的寄生电容大于或等于5皮法且小于或等于13皮法；
第二电极的电阻大于或等于8欧姆且小于或等于30欧姆，且第二电极的寄生电容大于或等于5皮法且小于或等于13皮法；
每个第一引线和每个第二引线的电阻大于或等于100欧姆且小于或等于2000欧姆。通过第一电极的电阻、第一电极的寄生电容、第二电极的电阻、第二电极的寄生电容、第一引线的电阻以及第二引线的电阻的优化且相互配合，以降低节点互电容充电至预设电压的所需时间。
在一些实施例中，每个所述触控单元中的所述第一电极和所述第二电极形成节点互电容，节点互电容充电至预设电压的时间小于或等于阈值时长，以减小节点互电容的充电时间，从而缩短互容扫描耗时，提高触控报点率。阈值时长越小，越有利于提高触控报点率。
在一些实施例中，触控显示装置还包括触控芯片，预设电压与输入电压的比值百分数为90％-100％，阈值时长小于或等于1.5微秒且大于0微秒，输入电压由触控芯片输出至触控单元。预设电压用于保证触控单元能正常工作，保证基本的触控性能。预设电压与输入电压的比值百分数可以为90％、92％、95％、97％、98％以及100％。阈值时长可以为0.4微秒、0.5微秒、0.55微秒、0.65微秒、0.7微秒、0.9微秒、 1.0微秒、1.2微秒、1.25微秒、1.35微秒、1.5微秒。
在一些实施例中，预设电压与输入电压的比值百分数为95％，阈值时长为1.35微秒。
触控显示装置的触控芯片通常需要工作在信号满足节点互电容充电至预设电压所需时间小于或等于t的状况，如果信号无法满足充电至预设电压的时间要求，则相应的驱动信号波形存在失真，将影响信号的检测以及触控性能，t为互容节点充电至预设电压的时间。
在一些实施例中，沿第一方向上同排设置的触控单元的数目大于沿第二方向同排设置的触控单元的数目，第一电极的寄生电容小于第二电极的寄生电容。
当第一方向上同排设置的触控单元的数目大于第二方向上同排设置触控单元的数目时，第一方向上同排设置的第一电极的数目会大于第二方向上同排设置的第二电极的数目，通过使第一电极的寄生电容小于第二电极的寄生电容，以减少第一方向上同排设置的第一电极形成的第一电极通道的寄生电容，更有利于电信号在第一电极通道上的传输，特别是，第一电极为驱动电极时，驱动电极用于输入扫描信号时，更加有利于降低3RC时间常数。
在一些实施例中，每个触控单元中，第一电极的面积小于第二电极的面积，以使得每个触控单元中第一电极的寄生电容小于第二电极的寄生电容。
在一些实施例中，第一电极包括沿第一方向延伸的第一主干电极以及由第一主干电极延伸出的至少一个第一分支电极；
第二电极包括沿第二方向延伸的第二主干电极以及由第二主干电极延伸出的至少一个第二分支电极。
第一主干电极沿第一方向延伸，且主要用于传导与第一方向平行的电流，第一分支电极主要用于与第二分支电极之间形成互电容，以调整触控感应量。
第二主干电极与第一主干电极的作用基本相同，第二分支电极与第一分支电极的作用基本相同。第一分支电极与第一主干电极之间的夹角大于0度且小于90度，例如可以为30度、40度、45度、50度、60度、70度以及80度等。第二分支电极与第二主干电极之间的夹角大于0度且小于90度，例如可以为30度、40度、45度、50度、60度、70度以及80度。具体地，第一分支电极与第一主干电极之间的夹角等于45度，第二分支电极与第二主干电极之间的夹角等于45度。在一些实施例中，第一主干电极内设置有浮置电极，和/或，至少一个第一分支电极内设置有浮置电极，和/或，第二主干电极内设置有浮置电极，和/或，至少一个第二分支电极内设置有浮置电极，浮置电极与第一电极以及第二电极电性绝缘。通过在第一主干电极以及第一分支电极中的至少一者内设置浮置电极，以降低第一电极的面积，从而降低第一电极的寄生电容。且通过在第二主干电极以及第二分支电极中的至少一者内设置浮置电极，以降低第二电极的面积，从而降低第二电极的寄生电容。
在一些实施例中，至少一个第一分支电极内设置有浮置电极，和/或，至少一个第二分支电极内设置有浮置电极。通过在第一分支电极和第 二分支电极中的一者内设置浮置电极，而不在第一主干电极以及第二主干电极内设置浮置电极，以减小第一电极和/或第二电极的面积从而减小第一电极和第二电极的寄生电容的同时，保证第一电极和/或第二电极的电阻。因为在分支电极内设置浮置电极不会对电极的电阻造成较大影响，而在主干电极内设置浮置电极会导致电极的电阻增大。
在一些实施例中，第二电极还包括第一连接分支电极，第一连接分支电极的一端连接第二主干电极，且第一连接分支电极的另一端连接第二分支电极，每个触控单元的第一连接分支电极、第二主干电极以及第二分支电极围合的区域设置有浮置电极，浮置电极与第一电极以及第二电极电性绝缘。在一个触控单元内，在第二分支电极和第二主干电极之间增加第一连接分支电极可以增加电流在第二电极上传导的电流传输通道，从而降低第二电极的电阻，从而降低节点互电容充电至预设电压所需时间。另外，每个触控单元的第一连接分支电极、第二主干电极以及第二分支电极围合的区域设置有浮置电极，可以减少第二电极的面积，从而减少第二电极的寄生电容，进一步地降低节点互电容充电至预设电压所需时间。
在一些实施例中，第二电极还包括第二连接分支电极，第二连接分支电极的一端连接第二分支电极，第二连接分支电极的另一端与第二方向上相邻触控单元的第二连接分支电极连接，同一个触控单元中的第一连接分支电极、第二连接分支电极、第二分支电极以及第二主干电极围合的区域设置有浮置电极。通过设置第二连接分支电极以增加相 邻两个触控单元的相邻两个第二电极的电流传输通道，从降低第二电极通道的阻抗，降低节点互电容充电至预设电压所需时间。且通过在同一个触控单元中的第一连接分支电极、第二连接分支电极、第二分支电极以及第二主干电极围合的区域设置有浮置电极，以进一步地减小第二电极的寄生电容。
在一些实施例中，第二分支电极由第二主干电极靠近第二主干电极与第一主干电极交叉的一端延伸出，在第二方向上相邻两个触控单元的相邻两个第二分支电极远离与第二主干电极连接的一端的另一端连接，在第二方向上相邻两个触控单元的相邻两个第二分支电极以及相邻两个第二主干电极围合的区域内设置有浮置电极。通过使相邻两个触控单元的第二分支电极在第二方向连接，以增加电流在第二电极通道上的传输路径，从而降低第二电极通道的阻抗，减少节点互电容充电至预设电压所需时间。且通过在第二方向上相邻两个触控单元的相邻两个第二分支电极以及相邻两个第二主干电极围合的区域内设置有浮置电极，以降低第二电极的寄生电容。
在一些实施例中，在靠近第一电极和第二电极交叉位置处，第一主干电极和第二主干电极中的至少一者设置有加宽部，以降低第一电极和第二电极中至少一者在靠近交叉位置处的电阻，从而减小节点互电容充电至预设电压所需时间。
在一些实施例中，触控显示装置还包括显示面板，触控层位于所述显示面板的一侧，显示面板包括有机发光二极管阵列层以及封装层，封装层位于触控层和有机发光二极管阵列层之间，封装层的厚度为5微 米-15微米。例如封装层的厚度为6微米、8微米、10微米、12微米、14微米。通过调节封装层的厚度以调节有机发光二极管阵列层的共阴极与触控层中第一电极和第二电极之间的寄生电容，封装层的厚度越大，寄生电容越小。
在一些实施例中，封装层包括有机层，有机层的厚度为6微米-12微米。例如有机层的厚度为6微米、8微米、10微米以及11微米。
需要说明的是，第一电极和第二电极的寄生电容主要来源于与共阴极之间的寄生电容，共阴极与第一电极以及第二电极之间的间距取决于封装层的厚度。触控芯片对节点互电容进行充电时，同时对寄生电容进行充电，当寄生电容越大时，将目标节点互电容充电到满足电信号检测的状态，例如充电至预设电压时，所需的扫描时间越长，因此相应的触控报点率会下降。
在一些实施例中，第一电极为驱动电极，且第二电极为感应电极。
在一些实施例中，第一电极以及第二电极均由金属网格组成。组成金属网格的金属线环绕子像素。
以下对本申请的一些概念进行解释。
节点互电容：每个触控单元中，第一电极和第二电极形成一个节点互电容，节点互电容包括第一电极和第二电极的边界之间形成的互电容以及第一电极和第二电极之间交叠部分形成的基础电容。一般而言，第一电极和第二电极的边界之间形成的互电容控制在合适的范围才有利于保证触控的信号量，从而提高触控灵敏度等触控性能，第一电极和第二电极之间交叠部分形成的基础电容越小，越有利于提高触控 报点率。触控芯片对驱动电极进行电信号扫描驱动时，相当于对相应的驱动电极与感应电极在交叉位置处形成的节点互电容进行充放电，触控芯片通过接收手指触摸时相应的节点电容的改变来检测手指触摸的位置。
3RC Settling time(3RC时间常数)是输出信号达到输入信号95％幅值状态的一个时间常数，该时间常数由触摸屏屏体本身的电阻、电容的大小以及分布来决定，其中，输入信号为由触控芯片输出至驱动电极的电压，输出信号是写入至节点互电容的电压。当触摸屏屏体设计确定后，则相应的触摸屏屏体上每个节点互电容的3RC时间常数确定。通常触摸屏屏体上节点互电容充电至输入信号95％幅值所需时间最长的节点互电容如果能满足预设的3RC时间常数，则其他节点互电容的信号亦可以满足预设的3RC时间常数，因此触摸屏的报点率通常由屏体上节点互电容充电至输入信号95％幅值所需时间最长的节点互电容的3RC时间常数来决定。
触控报点率：触控报点率等于触控一帧耗时(单位：秒)的倒数，通常触控的一帧耗时包括自容扫描时间、互容扫描时间、自互容切换时间和复位时间，其中占据触控一帧耗时的绝大部分是互容扫描耗时，互容切换时间和复位时间通常由触控芯片决定。互容扫描所需时间通常在触控芯片扫描频率满足的条件下，由屏体本身的3RC时间常数来决定。
以下结合具体实施例对上述方案进行详述。
第一实施例
请参阅图1，其为本申请触控显示装置的示意图。触控显示装置包括有机发光二极管显示面板10、触控层20、偏光片30以及保护盖板40。
有机发光二极管显示面板10包括基板100、薄膜晶体管阵列层101、有机发光二极管阵列层102以及封装层103。
基板100为柔性基板。薄膜晶体管阵列层101设置于基板100上，薄膜晶体管阵列层101包括多个阵列排布的薄膜晶体管。有机发光二极管阵列层102设置于薄膜晶体管阵列层101远离基板100的一侧。有机发光二极管阵列层102包括多个阵列排布的有机发光二极管，多个有机发光二极管包括多个独立的阳极、设置于每个阳极上的有机发光层以及一个共阴极，即多个有机发光二极管共用一个共阴极，共阴极为一个整面的金属导电层。每个有机发光二极管构成一个子像素。子像素包括红光子像素、蓝光子像素以及绿光子像素。封装层103用于保护有机发光二极管阵列层102中的有机层以及共阴极，避免有机层以及共阴极为水蒸气以及氧气等侵蚀。封装层103设置于有机发光二极管阵列层102远离薄膜晶体管阵列层101的一侧。封装层103可以为薄膜封装层，薄膜封装层包括两个无机层以及设置于两个无机层之间的有机层。
请参阅图2，其为图1所示触控层的示意图。触控层20包括缓冲层201、第二连接部202、第一钝化层203、第一电极204、第二电极205以及第二钝化层206。缓冲层201为绝缘层，缓冲层201的制备材料 选自氮化硅以及氧化硅中的至少一种。第二连接部202设置于缓冲层201上，第二连接部202具有导电性，第二连接部202为两条间隔设置的V形桥接线。第一钝化层203覆盖第二连接部202以及缓冲层201。第一钝化层203的制备材料选自氮化硅以及氧化硅中的至少一种。第一电极204以及第二电极205设置于第一钝化层203上，且第一电极204与第二电极205之间电性绝缘，第一电极204通过第一连接部(未示出)连接，第一电极204与第一连接部同层设置且连续形成。第二钝化层206覆盖第一电极204以及第二电极205。相邻两个第二电极205通过第二连接部202连接，每个第二电极205通过第一钝化层203上的过孔与第二连接部202连接。
在本实施例中，第一电极204、第二电极205、第二连接部202以及第一连接部组成触控电极。第二连接部202和第一电极204之间的交叠部分形成基础电容。第一电极204、第二电极205、第二连接部202以及第一连接部均由金属网格组成。金属网格环绕有机发光二极管阵列层的子像素设置，以避免对子像素的光造成遮挡。
第二实施例
请参阅图3，其为图1所示触控显示装置的触控层的第一种架构示意图。在第一方向上同排设置的多个触控单元207的第一电极204电性连接以形成一个第一电极通道，在第二方向上同排设置的多个触控单元207的第二电极205电性连接以形成一个第二电极通道。每个第一电极通道的两端与第一引线208连接，每个第二电极通道的一端与第 二引线209连接，即触控层采用2T1R架构。
在本实施例中，第一电极为驱动电极，第二电极为感应电极。在第二方向上有17个第一电极通道，在第一方向上有37个第二电极通道，其中，第1个第二电极通道至第37个第二电极通道依次排列且第37个第二电极通道距离触控芯片最远。以在第二方向上的4个第一电极通道为一组进行扫描，例如第1个至第4个第一电极通道为一组进行扫描，第5个至第8个第一电极通道为一组进行扫描，第9个至第12个第一电极通道为一组进行扫描，第13个至第16个第一电极通道为一组进行扫描，第17个第一电极通道为一组进行扫描。每组第一电极通道扫描四次，每次扫描对应输入一组波形，每一组波形包含48个标准方波，故扫描完一个完整的触控显示装置所需的互容扫描时间为5×4×48×2×t，其中，一个标准方波对应的时间为2×t，t为节点互电容充电至输入电压的95％时所需最长时间。
在本实施例，触控层上充电至输入电压95％所需时间最长的节点互电容M位于距离触控层中间的位置，例如第1个第一电极通道和第19个第二电极通道交叉处的节点互电容。
屏体互容扫描时间主要包括N组互容扫描波形构成，N组互容扫描波形的时间构成整个互容扫描时段，当屏体的通道数确定后，通常N与屏体的第一电极通道的数目以及第一电极通道的驱动分组相关。
第三实施例
请参阅图4，其为图1所示触控显示装置的触控层的第二种架构示意 图。图4所示触控层与图3所示触控层基本相似，图4与图3所示触控层的架构不同之处在于，每个第一电极通道的一端与第一引线208连接，每个第二电极通道的一端与第二引线209连接，即触控层采用1T1R架构。本实施例第一电极和第二电极的排布设计与图3所示触控层相同，分组扫描的方式也与第二实施例相同。
在本实施例中，触控层上充电至输入电压95％所需时间最长的节点互电容M位于距离触控芯片输入信号远端的位置，例如位于第1个第一电极通道和第37个第二电极通道交叉。
第四实施例以及对比例1
本实施例以及对比例1旨在研究降低感应电极的电阻、寄生电容以及感应电极通道的电阻对节点互电容充电至输入电压的95％所需时间的影响，触控单元1-3以及对比例1的仿真结果如表1。
如图5A所示，其为本申请实施例触控单元1的示意图。触控单元1包括第一电极204以及第二电极205。第一电极204包括第一主干电极2041以及第一分支电极2043，第一分支电极2043由第一主干电极2041在第一电极204与第二电极205交叉的位置处延伸出，第一主干电极2041向第一方向延伸，第一分支电极2043与第一主干电极2041之间的夹角等于45度。第二主干电极205包括第二主干电极2051以及第二分支电极2053，第二分支电极2053由第二主干电极2051在第一电极204和第二电极205交叉处延伸出，且第二分支电极2053与第二主干电极2051之间的夹角等于45度。每个第二分支 电极2053包围与第二分支电极2053相邻的一个第一分支电极2043。在第二方向上相邻两个触控单元的相邻两个第二分支电极2053连接。在第二方向上相邻两个触控单元的第二主干电极2051、第二分支电极2053围合的区域设置有浮置电极206，在第二方向上相邻两个触控单元的第二主干电极2051、第二分支电极2053围合的区域设置的浮置电极206的面积与每个第二分支电极2053的面积的比值为4：5，浮置电极206与第一电极204以及第二电极205之间电性绝缘。在第一方向上相邻两个触控单元的相邻两个第一主干电极、相邻两个第二分支电极2053围合的区域设置有浮置电极206，以避免第一方向上相邻两个触控单元的相邻两个第二分支电极2053断开且避免两者之间短路。
如图5B所示，其为本申请实施例触控单元2的示意图。图5B所示触控单元2与图5A所示触控单元1基本相似，不同之处在于，在第二方向上相邻两个触控单元的第二主干电极2051、第二分支电极2053围合的区域设置有浮置电极206的面积与每个第二分支电极2053的面积的比值为1：10。
如图5C所示，其为本申请实施例触控单元3的示意图。图5C所示触控单元3与图5A所示触控单元1基本相似，不同之处在于，第二电极205包括第一连接分支电极2054以及第二连接分支电极2055，第一连接分支电极2054的一端连接第二主干电极2051，且第一连接分支电极2054的另一端连接第二分支电极2053，每个触控单元的第一连接分支电极2054、第二主干电极2051以及第二分支电极2053围 合的区域设置有浮置电极206。第二连接分支电极2055的一端连接第二分支电极2053，第二连接分支电极2053的另一端与第二方向上相邻触控单元的第二连接分支电极2053连接，同一个触控单元中的第一连接分支电极2054、第二连接分支电极2055、第二分支电极2053以及第二主干电极2051围合的区域设置有浮置电极206。
对比例1的触控单元与图5A所示触控单元基本相似，不同之处在于，对比例1的触控单元在第二方向上相邻两个触控单元的第二主干电极2051、第二分支电极2053围合的区域不设置有浮置电极206。
表1 触控单元1-3以及对比例1的仿真结果
Figure PCTCN2020117677-appb-000001
Figure PCTCN2020117677-appb-000002
其中，Unit Cs_Tx为触控单元中第一电极的寄生电容，Unit Cs_Rx为触控单元中第二电极的寄生电容，Unit R_Tx为触控单元中第一电极的电阻，Unit R_Rx为触控单元中第二电极的电阻，R_Rx为与触控层上充电至输入电压的95％所需时间最长的节点互电容连接的第二引线209的电阻，3RC时间常数为节点互电容充电至输入电压的95％所需最长的时间。
上述触控单元1-3以及对比例1均采用第二实施例的触控层驱动架构。在自互容切换时间、自容耗时以及复位耗时均相同时，触控单元1-3的3RC时间常数均小于对比例1的3RC时间常数，触控单元1-3的3RC时间常数均小于1.35微秒，触控单元1-3的触控报点率大于对比例1的触控报点率，触控单元1-3的最大触控报点率为264Hz，触控单元1-3的触控报点率相对于对比例1的触控报点率至少提高了11.11％。主要原因在于触控单元1-3的第二电极205的寄生电容小于对比例1的第二电极205的寄生电容。触控单元3的3RC时间常数较小，主要原因在于触控单元3包括第一连接分支电极2054以及第二连接分支电极2055，增加了第二电极205的电流传输通道，从而降低了第二电极205的电阻，降低第二电极205的电阻有利于降低节点互电容充电至输入电压95％所需时间。触控单元2的3RC时间常数和触控单元1的3RC时间常数相同，主要原因在于触控单元1的第二电 极205的寄生电容明显小于触控单元2的第二电极205的寄生电容，而触控单元1的第一电极204的寄生电容稍大于触控单元2的第一电极204的寄生电容，然而第一电极204作为输入扫描信号的驱动电极，第一电极204的寄生电容的减小比第二电极205的寄生电容的减少更加有利于减少3RC时间常数，当然，第二电极205的寄生电容较小也有利于降低3RC时间常数。
需要说明的是，在触控单元1采用第二实施例的触控层驱动架构时，3RC时间常数为1.326微秒，触控芯片输出的互容扫描波形频率设置为377KHz。
第五实施例以及对比例2
本实施例以及对比例2旨在研究触控单元中驱动电极以及感应电极内设置浮置电极对驱动电极以及感应电极的电阻以及寄生电容的影响，且研究驱动电极以及感应电极的电阻以及寄生电容对应节点互电容充电至输入电压的95％所需时间(3RC时间常数)的影响，触控单元4-7以及对比例2经过模拟仿真的数据如表2。
如图6A所示，其为本申请实施例触控单元4的示意图。触控单元4包括第一电极204以及第二电极205，第一电极204包括第一主干电极2041、第一垂直主干电极2042以及第一分支电极2043，第一主干电极2041与第一垂直主干电极2042之间相互垂直，第一分支电极2043由第一主干电极2041以及第一垂直主干电极2042延伸出，且第一主干电极2041延伸出的第一分支电极2043与第一主干电极 2041之间的夹角等于45度，第一垂直主干电极2042延伸出的第一分支电极2043与第一垂直主干电极2042之间的夹角等于45度。第二电极205包括第二主干电极2051、第二垂直主干电极2052以及第二分支电极2053，第二主干电极2051与第二垂直主干电极2052之间相互垂直，第二分支电极2053由第二主干电极2051以及第二垂直主干电极2052延伸出，由第二主干电极2051延伸出的第二分支电极2053与第二主干电极2051之间的夹角等于45度，由第二垂直主干电极2052延伸出的第二分支电极2053与第二垂直主干电极2052之间的夹角等于45度。第一电极204和第二电极205的交叉位置处两个第一主干电极2041通过两对间隔设置的V形桥接线连接。第一电极204和第二电极205的交叉位置处两个第二主干电极2051通过连接部连接，连接部与第一电极204以及第二电极205同层设置。第一电极204以及第二电极205均关于第一主干电极2041以及第二主干电极2051对称设置。第一分支电极2043和与第一分支电极2043相邻的第二分支电极2053平行。部分第一分支电极2043与部分第二分支电极2053交叉设置。第一分支电极2043包括第一加宽部以及与第一加宽部对应的第一连接部，第二分支电极2053包括第二加宽部以及与第二加宽部对应的第二连接部。第一分支电极2043的第一加宽部与相邻的第二分支电极2053的第二连接部对应设置，第一分支电极2043的第一连接部与相邻的第二分支电极2053的第二加宽部对应设置。
如图6B所示，其为本申请实施例触控单元5的示意图。触控单元5 与触控单元4基本相似，不同之处在于，第一分支电极2043以及第二分支电极2053内均设置有浮置电极206，第一主干电极2041以及第二主干电极2051内未设置浮置电极206，浮置电极206与第一电极204以及第二电极205电性绝缘，浮置电极206不载入电信号。如图6C所示，其为本申请实施例触控单元6的示意图。触控单元6与触控单元5基本相似，不同之处在于，第一主干电极2041以及第二主干电极2051内设置有浮置电极206，第一分支电极2043以及第二分支电极2053内不设置浮置电极206，第一主干电极2041的面积与第一主干电极2041内的浮置电极206的面积的比值为7：3，第二主干电极2051的面积与第二主干电极2051内的浮置电极206的面积的比值为7：3，第一主干电极2041的面积不包括浮置电极206的面积，第二主干电极2051的面积不包括浮置电极206的面积。
如图6D所示，其为本申请实施例触控单元7的示意图。触控单元7与触控单元5基本相似，不同之处在于，第一主干电极2041、第二主干电极2051、第一分支电极2043以及第二分支电极2053内均设置有浮置电极206，第一主干电极2041的面积与第一主干电极2041内的浮置电极206的面积的比值为7：3，第二主干电极2051的面积与第二主干电极2051内的浮置电极206的面积的比值为7：3，其中，第一主干电极2041的面积不包括浮置电极206的面积，第二主干电极2051的面积不包括浮置电极206的面积。
对比例2的触控单元与图6C所示触控单元基本相似，不同之处在于，对比例2中的触控单元中，第一主干电极2041的面积与第一主干电 极2041内的浮置电极206的面积的比值为5：5，第二主干电极2051的面积与第二主干电极2051内的浮置电极206的面积的比值为5：5。
表2 触控单元4-7以及对比例2的仿真结果
Figure PCTCN2020117677-appb-000003
触控单元4-7以及对比例2采用图4所示触控层的触控架构示意图。由表2可知，触控单元4-7的3RC时间常数小于对比例2的3RC时间常数，且触控单元4-7的3RC时间常数均小于1.5微秒。主要原因在于，对比例2的第一电极204的第一主干电极2041以及第二电极205的第二主干电极2051中浮置电极206较多，导致第一电极205和第二电极206的阻抗较大，尽管第一电极204以及第二电极205的寄生 电容较小，但是由于第一电极204以及第二电极205的阻抗较大对节点互电容充电的不利影响超过第一电极204和第二电极205的寄生电容较小对节点互电容充电的有利影响，导致对比例2的3RC时间常数高达1.605微秒。触控单元4的3RC时间常数大于触控单元5的3RC时间常数，主要原因在于触控单元5在第一分支电极2043和第二分支电极2053内设置有浮置电极206，减小第一电极204以及第二电极205的面积，从而使得第一电极204和第二电极205的寄生电容减小，第一分支电极2043以及第二分支电极2053的面积减小不会影响第一电极204以及第二电极205的电阻。触控单元6的3RC时间常数大于触控单元4的3RC时间常数，主要原因在于，触控单元6的第一主干电极2041以及第二主干电极2051内设置有浮置电极206，减少第一电极204和第二电极205的面积以降低第一电极204和第二电极205的寄生电容的同时，第一主干电极2041和第二主干电极2051的电阻增大，第一主干电极2041和第二主干电极2051主要用于传导电流，第一电极204和第二电极205的阻抗增大，导致3RC时间常数较大。触控单元7的3RC时间常数小于触控单元6的3RC时间常数，主要原因在于，触控单元7的第一分支电极2043以及第二分支电极2053内均设置有浮置电极206，分支电极中设置浮置电极206使得第一电极204和第二电极205的寄生电容更小，从而使得3RC时间常数更小。
第六实施例以及对比例3
本申请实施例以及对比例3旨在研究在第一电极以及第二电极的交叉位置处增设加宽部对电阻的影响，且研究电阻降低对节点互电容充电至输入电压的95％所需时间(3RC时间常数)的影响，触控单元8以及对比例3经过模拟仿真的数据如表3。
如图7A所示，其为本申请实施例触控单元8的示意图。触控单元8包括第一电极204以及第二电极205。第一电极204包括两个第一等腰直角三角形电极，第二电极205包括两个第二等腰直角三角形电极，第一电极204的两个第一等腰直角三角形电极在第一方向上电性连接，第二电极的两个第二等腰直角三角形电极在第二方向上电性连接。第一等腰直角三角形电极的相邻两个边缘上且靠近第一电极204和第二电极205交叉位置处设置有内陷部204a，第二等腰直角三角形电极的对应边缘上设置有凸起部205a，每个内陷部204a与每个凸起部205a相互配合。在本实施例中，第一电极204为驱动电极，第二电极205为感应电极。
如图7B所示，其为对比例3的示意图。对比例3的触控单元与触控单元8基本相似，不同之处在于，对比例3的触控单元上未设置内陷部204a以及凸起部205a。
表3 触控单元8以及对比例3的触控单元的仿真结果
  触控单元8 对比例3
UnitCs_Tx(皮法) 9.5 10
UnitCs_Rx(皮法) 10.3 10.1
UnitR_Tx(欧姆) 48 52
UnitR_Rx(欧姆) 45 52
R_Rx(欧姆) 1980 1980
3RC时间常数(微秒) 1.385 1.455
触控单元8以及对比例3的触控单元采用如图3所示的触控架构。触控单元8的3RC时间常数小于对比例3的3RC时间常数，主要原因在于，触控单元8中第二电极205在靠近第一电极204和第二电极205交叉的位置设置有凸起部205a，使得第二电极205的主干电极的宽度在靠近第一电极204和第二电极205交叉位置处增加，从而使得第二电极205的电阻较小，而在第一电极204上设置内陷部204a，不会明显影响第一电极204的主干电极的电阻，第二电极205的电阻减小使得触控单元8的3RC时间常数较小。
以上实施例的说明只是用于帮助理解本申请的技术方案及其核心思想；本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例的技术方案的范围。

Claims (18)

  1. 一种触控显示装置，其中，所述触控显示装置包括触控层，所述触控层包括多个触控单元，每个所述触控单元包括一个沿第一方向设置的第一电极以及一个沿第二方向设置的第二电极，所述第一电极与所述第二电极电性绝缘，所述第一方向与所述第二方向相异，每个所述触控单元中，
    所述第一电极的电阻大于0且小于或等于50欧姆，且所述第一电极的寄生电容大于0且小于或等于18皮法；
    所述第二电极的电阻大于0且小于或等于50欧姆，且所述第二电极的寄生电容大于0且小于或等于18皮法；
    所述第一电极的寄生电容小于所述第二电极的寄生电容，所述第一电极为驱动电极，且所述第二电极为感应电极。
  2. 根据权利要求1所述的触控显示装置，其中，每个所述触控单元中，
    所述第一电极的电阻大于或等于5欧姆且小于或等于35欧姆，且所述第一电极的寄生电容大于或等于2皮法且小于或等于17皮法；
    所述第二电极的电阻大于或等于5欧姆且小于或等于35欧姆，且所述第二电极的寄生电容大于或等于2皮法且小于或等于17皮法。
  3. 根据权利要求1所述的触控显示装置，其中，所述触控显示装置还包括第一引线、第二引线以及触控芯片，所述第一引线与每个所述触控单元的所述第一电极电性连接，所述第二引线与每个触控单元的所述第二电极电性连接，所述第一引线以及所述第二引线与所述触控芯 片电性连接，每个所述第一引线和每个所述第二引线的电阻均大于0且小于或等于2500欧姆。
  4. 根据权利要求3所述的触控显示装置，其中，每个所述触控单元中，
    所述第一电极的电阻大于或等于8欧姆且小于或等于30欧姆，且所述第一电极的寄生电容大于或等于5皮法且小于或等于13皮法；
    所述第二电极的电阻大于或等于8欧姆且小于或等于30欧姆，且所述第二电极的寄生电容大于或等于5皮法且小于或等于13皮法；
    每个所述第一引线和每个所述第二引线的电阻大于或等于100欧姆且小于或等于2000欧姆。
  5. 根据权利要求3所述的触控显示装置，其中，每个所述第一引线和每个所述第二引线的电阻大于或等于200欧姆且小于或等于2200欧姆。
  6. 根据权利要求1的触控显示装置，其中，每个所述触控单元中的所述第一电极和所述第二电极之间形成节点互电容，所述节点互电容充电至预设电压的时间小于或等于阈值时长。
  7. 根据权利要求6所述的触控显示装置，其中，所述触控显示装置还包括触控芯片，所述预设电压与输入电压的比值百分数为90％-100％，所述阈值时长小于或等于1.5微秒且大于0，所述输入电压由所述触控芯片输出至所述触控单元。
  8. 根据权利要求7所述的触控显示装置，其中，所述预设电压与所述输入电压的比值百分数为95％，所述阈值时长为1.35微秒。
  9. 根据权利要求1所述的触控显示装置，其中，沿所述第一方向上同排设置的所述触控单元的数目大于沿所述第二方向同排设置的所述触控单元的数目。
  10. 根据权利要求9所述的触控显示装置，其中，每个所述触控单元中，所述第一电极的面积小于所述第二电极的面积。
  11. 根据权利要求1所述的触控显示装置，其中，所述第一电极包括沿所述第一方向延伸的第一主干电极以及由所述第一主干电极延伸出的至少一个第一分支电极；
    所述第二电极包括沿所述第二方向延伸的第二主干电极以及由所述第二主干电极延伸出的至少一个第二分支电极。
  12. 根据权利要求11所述的触控显示装置，其中，所述第一主干电极内设置有浮置电极，和/或，至少一个所述第一分支电极内设置有浮置电极，和/或，所述第二主干电极内设置有浮置电极，和/或，至少一个所述第二分支电极内设置有浮置电极，所述浮置电极与所述第一电极以及所述第二电极电性绝缘。
  13. 根据权利要求12所述的触控显示装置，其中，至少一个所述第一分支电极内设置有所述浮置电极，和/或，至少一个所述第二分支电极内设置有所述浮置电极。
  14. 根据权利要求11所述的触控显示装置，其中，所述第二电极还包括第一连接分支电极，所述第一连接分支电极的一端连接所述第二主干电极，且所述第一连接分支电极的另一端连接所述第二分支电极，每个所述触控单元的所述第一连接分支电极、所述第二主干电极以及 所述第二分支电极围合的区域设置有浮置电极，所述浮置电极与所述第一电极以及所述第二电极电性绝缘。
  15. 根据权利要求14所述的触控显示装置，其中，所述第二电极还包括第二连接分支电极，所述第二连接分支电极的一端连接所述第二分支电极，所述第二连接分支电极的另一端与所述第二方向上相邻所述触控单元的所述第二连接分支电极连接，同一个所述触控单元中的所述第一连接分支电极、所述第二连接分支电极、第二分支电极以及所述第二主干电极围合的区域设置有浮置电极。
  16. 根据权利要求11所述的触控显示装置，其中，所述第二分支电极由所述第二主干电极靠近所述第二主干电极与所述第一主干电极交叉的一端延伸出，在所述第二方向上相邻两个所述触控单元的相邻两个所述第二分支电极远离与所述第二主干电极连接的一端的另一端连接，在所述第二方向上相邻两个所述触控单元的相邻两个所述第二分支电极以及相邻两个第二主干电极围合的区域内设置有浮置电极，所述浮置电极与所述第一电极以及所述第二电极电性绝缘。
  17. 根据权利要求11所述的触控显示装置，其中，在靠近所述第一电极和所述第二电极交叉位置处，所述第一主干电极和所述第二主干电极中的至少一者设置有加宽部。
  18. 根据权利要求1所述的触控显示装置，其中，所述触控显示装置还包括显示面板，所述触控层位于所述显示面板的一侧，所述显示面板包括有机发光二极管阵列层以及封装层，所述封装层位于所述触控层和所述有机发光二极管阵列层之间，所述封装层的厚度为5微米 -15微米。
PCT/CN2020/117677 2020-07-24 2020-09-25 触控显示装置 Ceased WO2022016703A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US17/265,132 US11460968B2 (en) 2020-07-24 2020-09-25 Touch control display device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010721338.1 2020-07-24
CN202010721338.1A CN111596804B (zh) 2020-07-24 2020-07-24 触控显示装置

Publications (1)

Publication Number Publication Date
WO2022016703A1 true WO2022016703A1 (zh) 2022-01-27

Family

ID=72186564

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/117677 Ceased WO2022016703A1 (zh) 2020-07-24 2020-09-25 触控显示装置

Country Status (3)

Country Link
US (1) US11460968B2 (zh)
CN (1) CN111596804B (zh)
WO (1) WO2022016703A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111596804B (zh) * 2020-07-24 2020-10-16 武汉华星光电半导体显示技术有限公司 触控显示装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102566845A (zh) * 2012-01-05 2012-07-11 福建华映显示科技有限公司 增加报点率的触控系统及增加触控系统报点率的方法
CN103221910A (zh) * 2010-08-27 2013-07-24 Uico公司 具有动态电容控制和改善的触摸传感的电容式触摸屏
CN109766024A (zh) * 2019-01-11 2019-05-17 京东方科技集团股份有限公司 一种触控面板及显示装置
CN111596804A (zh) * 2020-07-24 2020-08-28 武汉华星光电半导体显示技术有限公司 触控显示装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014113983A1 (en) * 2013-01-28 2014-07-31 Texas Instruments Incorporated Capacitive single layer multi-touch panel having improved response characteristics
KR102178797B1 (ko) * 2013-10-04 2020-11-16 삼성디스플레이 주식회사 터치 센서를 포함하는 표시 장치
JP6026003B2 (ja) * 2013-10-22 2016-11-16 富士フイルム株式会社 導電性フイルム、タッチパネル及び表示装置
JP2015106240A (ja) * 2013-11-29 2015-06-08 富士フイルム株式会社 導電性フイルム及びタッチパネル
CN105489632A (zh) * 2016-01-15 2016-04-13 京东方科技集团股份有限公司 Oled阵列基板及其制造方法、oled显示面板和oled显示装置
CN106374053B (zh) * 2016-11-22 2018-05-25 上海天马微电子有限公司 一种oled显示面板和显示装置
CN106952938B (zh) * 2017-05-16 2020-06-02 上海天马微电子有限公司 一种柔性显示装置及其制造方法、以及柔性显示设备
TWI635430B (zh) * 2017-06-15 2018-09-11 禾瑞亞科技股份有限公司 Pressure sensing touch device
TWI708173B (zh) * 2019-08-26 2020-10-21 友達光電股份有限公司 觸控面板

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103221910A (zh) * 2010-08-27 2013-07-24 Uico公司 具有动态电容控制和改善的触摸传感的电容式触摸屏
CN102566845A (zh) * 2012-01-05 2012-07-11 福建华映显示科技有限公司 增加报点率的触控系统及增加触控系统报点率的方法
CN109766024A (zh) * 2019-01-11 2019-05-17 京东方科技集团股份有限公司 一种触控面板及显示装置
CN111596804A (zh) * 2020-07-24 2020-08-28 武汉华星光电半导体显示技术有限公司 触控显示装置

Also Published As

Publication number Publication date
US20220155905A1 (en) 2022-05-19
CN111596804B (zh) 2020-10-16
US11460968B2 (en) 2022-10-04
CN111596804A (zh) 2020-08-28

Similar Documents

Publication Publication Date Title
US11703985B2 (en) Touch display device
CN111736736B (zh) 触控组件及触控显示装置
CN111651092A (zh) 触控组件及触控显示装置
CN111596805B (zh) 触控显示装置
CN110837314A (zh) 触控感应装置及触控显示面板
CN111651093A (zh) 触控电极层及触控显示装置
CN113126822B (zh) 触控显示面板及显示装置
WO2021139723A1 (zh) 触控面板及显示装置
US11941206B2 (en) Touch control component and touch control display device
US20210149525A1 (en) Touch module and touch screen
CN204515745U (zh) 触控结构、基板、阵列基板及显示装置
CN112114702A (zh) 显示面板及其制作方法
US11907451B2 (en) Touch electrode structure and touch display panel
US11221717B2 (en) Touch substrate, manufacturing method and display device
CN212624007U (zh) 触控电极层及触控显示装置
WO2022017499A1 (zh) 一种显示面板和显示装置
CN118092705A (zh) 触控显示面板及显示装置
WO2022016703A1 (zh) 触控显示装置
CN111766978A (zh) 触控组件及触控显示装置
WO2023070733A1 (zh) 自容式触控面板
CN212229617U (zh) 触控组件及触控显示装置
CN212460535U (zh) 触控组件及触控显示装置
CN114924664A (zh) 触控基板及显示面板
US12248651B2 (en) Touch substrate and display device
EA042671B1 (ru) Устройство отображения с сенсорным управлением

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20945886

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20945886

Country of ref document: EP

Kind code of ref document: A1